# How do I know?

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#### Rockiedog2

##### Well-Known Member
HBA Supporter
When I can walk across the clay runway and not sink in.
Another hard storm with lots of rain last night.
Same here Dan. Been tweaking and then sittin waiting on the strip to dry up or the wind quit blowing. If not for that I would have had the list done long ago.
Sorry, didn't mean to get OT

#### Rockiedog2

##### Well-Known Member
HBA Supporter
Aye, that's the rub. MY interpretation, when I'm feeling appropriately bloody-minded, is that 91.215 and .225 don't apply to homebuilts *at all*.

"...any aircraft which was not originally certificated with an engine-driven electrical system or which has not subsequently been certified with such a system installed..."

The "subsequently certified" must be referring to a Supplemental Type Certificate...from wence, one can assume that "originally certificated" refers to the TYPE CERTIFICATE as well. And, of course, EABs don't have those. All, literally, have not been certificated. Hence, none have been certificated with an engine-driven electrical system.

#### BBerson

##### Light Plane Philosopher
HBA Supporter
The actual type certificate paper is held by the manufacturer. All aircraft are required to carry an airworthiness certificate paper and a registration "certificate". So they are heavily certified.

Ultralights are not aircraft and are classed as vehicles by the FAA and so no FAA certificates.

Models and UAS over 9oz have a sort of FAA registration process now.